Evidence of two-stage magnetic reconnection in the 2005 January 15 X2.6 flare

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 太阳活动的多波段观测研究团组

	Evidence of two-stage magnetic reconnection in the 2005 January 15 X2.6 flare
	Wang, Pu 1; Li, Yixuan 2; Ding, Mingde 1; Ji, Haisheng3,4 ; Wang, Haimin 2
刊名	NEW ASTRONOMY
	2011-11-01
卷号	16 期号:7 页码:470-476
关键词	Sun: corona Sun: flares Sun: activity Sun: magnetic fields
ISSN号	1384-1076
英文摘要	We analyze in detail the X2.6 flare that occurred on 2005 January 15 in the NOAA AR 10720 using multiwavelength observations. There are several interesting properties of the flare that reveal possible two-stage magnetic reconnection similar to that in the physical picture of tether-cutting, where the magnetic fields of two separate loop systems reconnect at the flare core region, and subsequently a large flux rope forms, erupts, and breaks open the overlying arcade fields. The observed manifestations include: (1) remote Fix brightenings appear minutes before the main phase of the flare; (2) separation of the flare ribbons has a slow and a fast phase, and the flare hard X-ray emission appears in the later fast phase; (3) rapid transverse field enhancement near the magnetic polarity inversion line (PIL) is found to be associated with the flare. We conclude that the flare occurrence fits the tether-cutting reconnection picture in a special way, in which there are three flare ribbons outlining the sigmoid configuration. We also discuss this event in the context of what was predicted by Hudson et al. (2008), where the Lorentz force near the flaring PIL drops after the flare and consequently the magnetic field lines there turn to be more horizontal as we observed. (C) 2011 Elsevier B.V. All rights reserved.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	CORONAL MASS EJECTIONS ; SOLAR ACTIVE-REGION ; X-CLASS FLARES ; FIELD CHANGES ; H-ALPHA ; RAPID CHANGES ; RAY FLARE ; ENERGY ; BRIGHTENINGS ; RADIO
收录类别	SCI
语种	英语
WOS记录号	WOS:000291915600007
公开日期	2012-08-07
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/4505]
专题	紫金山天文台_太阳活动的多波段观测研究团组
作者单位	1.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China 2.New Jersey Inst Technol, Space Weather Res Lab, Newark, NJ 07102 USA 3.Chinese Acad Sci, Key Lab Dark Matter & Space Sci, Nanjing 210008, Peoples R China 4.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Wang, Pu,Li, Yixuan,Ding, Mingde,et al. Evidence of two-stage magnetic reconnection in the 2005 January 15 X2.6 flare[J]. NEW ASTRONOMY,2011,16(7):470-476.
APA	Wang, Pu,Li, Yixuan,Ding, Mingde,Ji, Haisheng,&Wang, Haimin.(2011).Evidence of two-stage magnetic reconnection in the 2005 January 15 X2.6 flare.NEW ASTRONOMY,16(7),470-476.
MLA	Wang, Pu,et al."Evidence of two-stage magnetic reconnection in the 2005 January 15 X2.6 flare".NEW ASTRONOMY 16.7(2011):470-476.